Headlamp for a bicycle



FIG. 1 is a front view of a headlamp for a bicycle showing our mydesign;

FIG. 2 is a rear view thereof,

FIG. 3 is a top plan view thereof,

FIG. 4 is a bottom plan view thereof,

FIG. 5 is a right side view thereof,

FIG. 6 is a left side view thereof, and,

FIG. 7 is a perspective view thereof.

The ornamental design for a headlamp for a bicycle, as shown.